Aoi Hitsuji no Yume

Sweet young Kai and the doctor Maria shared a bond that they thought no one could destroy...until Maria's brutal murder tore her from Kai's arms forever. Now, Kai wanders the pitch-black streets of the inner city searching for the man who stole Maria's life. But will he end up a pawn in a gang war that will force him to fight for his very existence? With both a mysterious electronic frequency and a strange, powerful man named Lahti shadowing his every move, Kai must slay his new-found enemies...or fall prey to their desires.